our cnc plasma cutting is 99% exhaust work: tube copes, holes in tubes and flanges, thus we need the inside of the tube as clean as the outsideif you look at the video, notice we use a coolant pump in the center hole of the rotacut chuck to keep dross out of the inside of the tubecoolant (table water) pump is a $15 aquarium pump that we've had since we set the table up 5 years agorotacut is the main use/purchase for our table, anything beyond that is a bonus, now we cut a lot of ss flanges and custom turbo flangesworks great for the investment we have in it